Re: BUG #1208: Invalid page header
Robert E. Bruccoleri <bruc@stone.congenomics.com>
From: "Robert E. Bruccoleri" <bruc@stone.congenomics.com>
To: tgl@sss.pgh.pa.us (Tom Lane)
Cc: bruc@acm.org, peter_e@gmx.net, pgman@candle.pha.pa.us, bruc@stone.congenomics.com, pgsql-bugs@postgresql.org, hubert.froehlich@bvv.bayern.de
Date: 2004-08-17T21:15:54Z
Lists: pgsql-bugs
Dear Tom, > > > "Robert E. Bruccoleri" <bruc@stone.congenomics.com> writes: > > Besides a no optimization compilation of 7.4.3, what else > > would you recommend to explore this problem further? Thanks. --Bob > > I really haven't the foggiest where to look :-( I don't actually > believe that it's a spinlock problem; that would explain pages getting > substituted for other pages, in whole or in part, but you showed at > least one example where a page was just overwritten with garbage. > That looks more like a memory-stomp problem (again, assuming that it's > software) and so could be anywhere. Does the memory pattern in the garbage page look familiar? > > Are you using any off-the-beaten-track code (contrib modules, > non-btree indexes, non-mainstream data types)? That stuff is less > well debugged than the mainstream ... No, it's all standard stuff (text, integers, floats, etc.). Thanks. --Bob +-----------------------------+------------------------------------+ | Robert E. Bruccoleri, Ph.D. | email: bruc@acm.org | | President, Congenair LLC | URL: http://www.congen.com/~bruc | | P.O. Box 314 | Phone: 609 818 7251 | | Pennington, NJ 08534 | | +-----------------------------+------------------------------------+